Biological molecules mcqs pdf

              IMPORTANT MCQS FOR COMPETITIVE EXAMS

1-The human body is made up of _ elements:

Answer: 16

2-How much elements are common in living organisms:

Answer: 6(oxygen,hydrogen,carbon,nitrogen,sulphur and phosphorous)

3-Water is_th part of body weight:

Answer: 3/4

4-In bacterial cell _% water is present in protoplasm:

Answeer: 70%

5-_%Protein is present in eukaryotic protoplasm:

Answer: 18

6-Condensation is _reaction:

Answer: ANABOLISM

7-Which reaction is energy storing process:

Answer: CONDENSATION

8-Carbon,oxygen and hydrogen form_%of body:

Answer: 95

9-_% of body or cells have  oxygen:

Answer: 65%

10-Bacterial cell contain _% DNA:

Answer: 1%

11-The primary source of energy is:

Answer: CARBOHYDRATES

12-Which organic compound present abundant in cell:

Answer: PROTEIN

13-The most abundant organic compound in nature:

Answer: CARBOHYDRATES

14-Most abundant protein in vertebrates:

Answer: COLLAGEN

15-Most abundant protein in nature:

Answer: RUBISCO

16-Which force has _hydrogen bond in between them:

Answer: COHESIVE FORCE

17-The major bioelements_%of protoplasm:

Answer:99%

18-How many elements present in living organisms out of 92 naturally elements:

Answer: 25

19- Which organic compound act as fuel in cytoplasm for metabolic activities:

Answer: CARBOHYDRATES

20-The body of living organisms contain _% water:

Answer: 70-90

21-Which compound is called as medium of life:

Answer: WATER(INORGANIC COMPOUND)

22-_Protoplasm cannot live if water reduced as low as _%:

Answer: 10

23-Water is called as universal solvent because of :

Answer: POLAR NATURE

24:Water is _molecule:

Answer: POLAR

25-The temprature of water rises and fall slowly because of which property:

Answer: HIGH SPECIFIC HEAT

26-Water get rid of excess by _:

Answer: sweating(High specific heat of vapourization)

27-Which group of carbohydrates is most soluble in water:

Answer: MONOSACCARIDES

28-Which group of hydrates least sweet:

Answer: POLYSACCRIDES

29-Which group of carbohydrates is not hydrolyzed further:

Answer: MONOSACCRIDES

30-Water has high density at_temptrature:

Answer: 4 DEGREE CENTIGRADE

31-Water has high volume at _temprature:

Answer: AT 0 CELSIUS

32-At which celsius water volume increaased 9%:

Answer: 0 celsius

33-Which group of carbohydrates are called as simple sugars:

Answer: MONOSACCRIDES

34-Which organic compound called as hydrated carbon:

Answer: CARBOHYDRATES because it has same ratio of hydrogen and oxygen as water

35-The carbon ring have hydroxl group at lower end called as _ring:

Answer: alpha ring

36-Minimum_hydroxyl group are required for a compound to be called as carbohydrates:

Answer; 2

37-The complex monosaccarides has 7 carbon called as:

Answer: SODA HECTOSE

38-The monosaccrides has_carbons:

Answer: 3-7

39-Which class of carbohydrates are white crystalline powders:

Answer: MONOSACCARIDES

40-Ribose is _carbon monosaccrides:

Answer: 5 

41-Glucose contain_functional group:

Answer: ALDEHYDE

42-Glycosidic bond is _Bond:

Answer: COVALENT

43-The sugar having hydroxyl group on paltinimate carbon on left side is called:

Answer: Left handed sugar

44-Which sugar is natural sweetner:

Answer : D sugar or right hand sugar

45-Human use _Handed sugar:

Answer: D sugar

46-The most common oligosaccride in nature is:

Answer: DISACCARODES

47-Which polysaccrides has only unbranched units:

Answer: CELLULOSE

48-Maltose is made up of :

Answer: Glucose + Glucose

49-Lactose is _sugar:

Answer: DISACCRIDE

50-In cells and tissues _aminoacids are present:

Answer: 170

51-_aminoacids combine to form thouand proteins:

Answer: 20

52-Aminoacids differ from each other by _group:

Answer; R ALKYL GROUP

53-Peptide chain has _bond:

Answer: HYDROGEN

54-Peptide bond form in between_elements:

Answer: Carbon - nitrogen

55-DIpeptide chain has _aminoacids:

Answer: 3

56-Dipeptide compound has_aminoacids:

Answer: 2

57-Which type of protein soluble in water:

Answer: GLOBULAR 

58-Heamoglobin has -aminoacids:

Answer: 574

59-In sickle cell anemia glutamic acid is replaced by ;

Answer: VALINE

60-Myoglobin has_structure:

Answer: TERTIARY

61:Fatty acids has _carbons:

Answer: 2-30

62-The type of lipids has noo fatty acids and glycerol and has four fused carbon ring:

Answer: STERIODS

63-Lipids present in cell membrane in _form:

Answer:PHOSPHOLIPIDS

64-Which conjugated molecule present in all biological membrane;

Answer: LIPOPROTEIN

65-Adenine and thymine has _bond:

Answer: 2 hydrogen bond

66-Human use _handed aminoacids:

Answer: LEFT HANDED

67-Bacteria use _handed aminoacids;

Answer: RIGHT

68-The type of lipids present mostly in soluble form:

Answer: WAXES

69-Which organic compound is most energetic:

Answer: LIPIDS

70-NAD is _:

Answer: COENZYMES

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